Skip to content
This page is also available in your language. Switch

Sync settings

Choose what your account keeps in step on every device where you are signed in.

  • My tools

    Always synced: the tools on your board, their order and size.

  • The windows open on your start page, including what you typed in them.

  • Every note in the notepad – on the notepad page, on your board and in windows.

  • Every list of website shortcuts – on the shortcuts page, on your board and in windows.

  • Every grid in the cover grid maker – on its page, on your board and in windows.

  • Every list of bookmarked organisations in the OIN lookup – on its page, on your board and in windows.

  • Keeps your pipeline and saved recipes on all your devices. Your files are never synced – only the steps and settings.

Turning something off removes it from your account straight away. Your devices keep their own copy.

Notifications

Tools that can tell you about something new while a Synsi tab is open, even when you are in another tab or app. Choose them for this browser.

This browser cannot show notifications from websites.
Notifications are blocked for this site. Allow them in your browser’s site settings (the icon left of the address), then switch them on here.

  • Says “New message” while a Synsi tab is open – never who wrote it or what.

Your choice is stored in this browser only. Notifications never show personal content such as a message or a number. They work while a Synsi tab is open; closed tabs get none.

Browse all tools →

Linear Regression Calculator

Fit a straight line to paired x and y observations and calculate slope, intercept and R-squared.

My tools →

Slope

–

Y-intercept

–

R-squared

–

Results are mathematical estimates. Statistical calculations depend on the entered data and assumptions; they do not establish causation or replace expert review.

Runs in your browser – your data never leaves your device Also available via our free API

How to use the Linear Regression Calculator

  1. 1 Enter the numbers or data requested.
  2. 2 Choose the calculation option when available.
  3. 3 Review the result and its assumptions.

How the Linear Regression Calculator works

The least-squares line minimizes the sum of squared vertical residuals. R-squared describes the share of observed variation explained by this fitted line; it does not establish causation.

Entering your data

Use the values or comma-separated observations requested above. Check that you use consistent units and include every value relevant to the calculation.

Understanding the result

The result follows the formula shown here and is rounded for display. It is a mathematical aid; check assumptions and data quality before using it in coursework, analysis or a decision.

Frequently asked questions

How is this result calculated?

The least-squares line minimizes the sum of squared vertical residuals. R-squared describes the share of observed variation explained by this fitted line; it does not establish causation.

Can I use the result as a guarantee?

No. The result depends on the inputs and stated assumptions. Review the data and method before relying on it.

Last updated: